Banding press



Nov 24, 1942, w. CARTER BANDING PRESS 2 SheetB-Sheet 1 Filed Nov.27/1940 M .R O. 9 m 2 w m a I x 2 w I a M 2 m I 3 w a n Willium L-Carter W ATTORNEYS "Nov.24,1942. w. L. CARTER 2,3025674 BANDING PRESS IFiled Nov. 27, 1940 2 Sheets-Sheet 2 i 26 32 EIH 1| 32 I g 31' l i 25 2aQ I so 35 a a 5 I Fig.5-

ATTORNEYS .i Eh

Patented Nov. 24, 1942 UNITED STATES PATENT OFFICE I BANDING PRESSWilliam L. Carter, Philadelphia, Pa.

Application November 2], 1940, Serial No. 367,408

3 Claims.

The invention described herein may be manufactured and used by or forthe Government for governmental purposes, without the payment to me ofany royalty thereon.

This invention relates to projectiles in general, and in=particular hasreference to a method of attaching rifling bands to projectiles.According to the method the bands are put on by means of a banding pressin which the thrust of a vertical press member is transmitted to theband by means of horizontal sliding blocks which r ceive the verticalthrust on their inclined surfaces.

It is an object of this invention to facilitate the placingof riflingbands on projectiles.

It is a further object of this invention to pro vide a novel press meansfor placing rifling bands on projectiles.

It is a further object of this invention to provide a banding pressmeans for securing rifling bands to projectiles wherein a thrustlengthwise of the projectile is converted into a thrust transverse ofthe same for pressing the band into place.

To these and other ends, the invention consists in the construction,arrangement and combination of elements described hereinafter andpointed out in the claims forming a part of this specification.

A practical embodiment of the invention is 11- lustrated in theaccompanying drawings where- Figure 1 is a elevation in axial section ofthe banding press;

Figure 2 is a plan section taken on the line 2-2 of Figure 1 and showinga projectile in place;

Figure 3 is an elevation in axial section taken on the line 33 of Figure2;

Figure 4 is an exploded view in perspective of the lower portions of thepress;

Figure 5 is a detail in section taken along the line 5-5 of Figure 2;

Figure 6 is an elevation of a projectile showing the band in section andbefore pressing, and

Figure 7 is a top view of the jaw housing with the cover plate removed.

Referring to the drawings by characters 01E reference there is shown abed plate I with a central bore 2 for passage of the projectile afterbanding. This bed plate I has a central circular prominence 3 havingembedded therein filler pads 4 which form bearing surfaces for slidingjaws presently to be described. The bed plate I and prominence 3 arechannelled out as at 5 to receive a sliding paddle 6, the purpose ofwhich is to form a support for the projectile I, as best seen in Figure3, and to release the same to permit it to fall through bore 2 after thebanding operation is complete.

Fixed to the bed plate I by bolts 8 is a drumshaped housing 9 for thesliding jaws I0. Housing 9 has six radial chambers II of generallyT-shape to accommodate the jaws Ill, The lower portions I2 of thesechambers II are wider than the legs 53 of the T-jaws Ill in order topermit lateral sliding of the jaws. When housing 9 is bolted to the bedplate 5, these lower openings i2 overlie the filler pads 4 so that thebottoms of the jaws It may slide on the latter.

Jaws it have abore I4 opening into the leg is thereof to accommodate ahelical spring I5 the purpose of which is to keep the jaw I9 normallydistended outwardly of the center of the housing 9. On the inward faceof the jaws III are serrations I6 for gripping the band I! and applyinglocalized pressure thereto to ensure intimate contact of the latter withthe band seat I8 on the projectile. This seat I8 is usually providedwith a roughened surface such as afiorded by annular ridges I9 toimprove the bond with the band. On the outer face of the jaws I0 is aninclined surface 29. The jaws III are secured in the housing 9 by meansof screwed cover plate 25,

A hub 21 on housing 9 is shaped to fit in the bore 2' in the bed plateI, which bore defines the terminus of the channel 5. The housing 9 iscentrally bored as at 22 to receive the projectile and the lower face ofthe hub 2| is slotted from a diameter of the bore 22 outward toaccommodate the upper stepped portion 23 on paddle B. In addition tostud bolts 8, the housing 9 is further keyed to the bed plate I by meansof sector-shaped boss 24 fitting in a complementary depression 24 in theprominence 3 of the bed plate I.

The press member comprises a central rod 26 terminating in acircularflange 21 from which depends four pins 28 hearing a ring-shapedmember 29 with slanting inner surface 30 corresponding to the slantsurface 20 of the jaws. The pins 28 have a reduced shoulder 3| which isfitted into flange 21 and held there by screws 32. A reduced shoulder 33on the lower ends of the pins 28 holds the ring 29 by threads 34. Screws32 and threads 34 are subjected only to dead loads in the press headassembly when the latter is suspended. Attached by screws 35 to slantsurface 30 on press ring 29 and maintaining the slant thereof is aseries of inserts 36 of hardened material for engagement with the slantsurface 20 of jaws H].

The press head is steadied by means of guide posts 3'! slidably engagingbores 38 in the ring 29. The posts 3! have reduced shoulders 39 fittedinto bores 40 in bed plate I.

The operation is as follows: The band I! is applied loosely to theprojectile either by wrapping a rectangular sheet about the band seat l8or by slipping over the seat a cut section of tubing The projectile isthen placed in the central opening 22 in the jaw housing and comes torest on the paddle 6, as best seen in Figure 3. The upper press head islowered and slant surfaces on inserts 35 in ring 29 acting on slantsurface 20 on jaws I6 cause the latter to move radially inward of thehousing 9 to press the band I! into place in its seat I3. When the presshead is raised, springs 15 repel the jaws it freeing the bandedprojectile, and when the paddle 6 is retracted the projectile fallsthrough bore 2. The paddle 6 is then reinserted and the press is readyto receive another projectile for band- 1 I claim:

1. A banding press for projectiles and the like comprising a generallyring-shaped press head mounted for axial travel and having its innerperiphery inclined to the direction of travel and a receiving member forthe projectile to be banded, located centrally of said ring-shaped presshead and having generally T-shaped chambers, T-shaped band-pressing jawsmounted in said chambers, said chambers opening outwardly of thereceiving member at the three extremities of the T-arms and slidableradially of said receiving member and of said press head, said jawshaving a slant surface complementary to and engaging with the slantsurface of said press head whereby axial motion of said press head isconverted into radial motion of said jaws for press ing bands intoprojectiles and the like.

2. A banding press for projectiles and the like comprising a generallyring-shaped press head mounted for axial travel and having its innerperiphery inclined to the direction of travel and a receiving member forthe projectile to be handed located centrally of said ring-shaped presshead a plurality of band-pressing jaws mounted therein and slidableradially of said receiving member and of said press head, said jawshaving a slant surface complementary to and engaging with the slantsurface of said press head whereby axial motion of said press head isconverted into radial motion of said jaws for pressing bands intoprojectiles and the like, said jaws being generally "I'- shaped and saidhousing comprising generally- T-shaped chambers to accommodate the jaws,said chambers opening outwardly of the housing at the three extremitiesof the T arms, a bed plate fastened to the side of the receiving memberexposing the bottom of the T jaws and bearing plates in the bed plate tofacilitate sliding of the jaws thereon.

3. A banding press as in claim 2 comprising a channel in the bed plateand a paddle slidable in the same to underlie the projectile or the likewhen received in the housing.

WILLIAM L. CARTER.

